Alert archive / Maryland / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 140, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 20, 2008, 10:13 PM EDT for Cecil County, Maryland; New Castle County, Delaware. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2008, 10:13 PM EDT (02:13 UTC)
- Expired
- Jul 20, 2008, 11:15 PM EDT
- In force
- 62 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Cecil County, MD
The radar
The Dover AFB radar (KDOX), 95 km from the middle of the area, began a volume at 02:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.2 hours before the alert went out and 158 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 143 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1969 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 210213
SVRPHI
DEC003-MDC015-210315-
/O.NEW.KPHI.SV.W.0140.080721T0213Z-080721T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1013 PM EDT SUN JUL 20 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
* UNTIL 1115 PM EDT
* AT 1008 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR CHERRY HILL...OR ABOUT NEAR
ELKTON...AND MOVING EAST AT 33 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NEWARK AND GLASGOW BY 1020 PM...
BEAR AND PIKE CREEK BY 1025 PM...
STANTON AND 7 MILES NORTH OF SAINT GEORGES BY 1030 PM...
WILMINGTON MANOR...NEWPORT AND ELSMERE BY 1035 PM...
LAT...LON 3974 7572 3981 7550 3954 7565 3954 7586
3955 7587 3954 7588 3955 7594 3970 7594
TIME...MOT...LOC 0213Z 264DEG 28KT 3964 7582
$$
EBERWINE1 follow-up statement
000
WWUS51 KPHI 210239
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1036 PM EDT SUN JUL 20 2008
MDC015-210246-
/O.CAN.KPHI.SV.W.0140.000000T0000Z-080721T0315Z/
CECIL MD-
1036 PM EDT SUN JUL 20 2008
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CECIL COUNTY IS
CANCELLED...
LAT...LON 3972 7578 3976 7565 3977 7564 3976 7563
3979 7551 3974 7553 3954 7565 3954 7577
3955 7577 3954 7578
TIME...MOT...LOC 0236Z 264DEG 28KT 3966 7559
$$
DEC003-210315-
/O.CON.KPHI.SV.W.0140.000000T0000Z-080721T0315Z/
NEW CASTLE DE-
1036 PM EDT SUN JUL 20 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR NORTHERN NEW CASTLE COUNTY...
AT 1034 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WILMINGTON MANOR...OR
7 MILES SOUTHWEST OF WILMINGTON...MOVING EAST AT 32 MPH.
LAT...LON 3972 7578 3976 7565 3977 7564 3976 7563
3979 7551 3974 7553 3954 7565 3954 7577
3955 7577 3954 7578
TIME...MOT...LOC 0236Z 264DEG 28KT 3966 7559
$$
EBERWINEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 5:20 AM EDT | Coastal Flood Statement | PHI | Sussex | 24 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2008Severe Thunderstorm Warnings in Delaware, 2008Every severe thunderstorm warning in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.